From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gdb-patches-return-125935-listarch-gdb-patches=sources.redhat.com@sourceware.org>
Received: (qmail 27059 invoked by alias); 10 Sep 2015 15:19:32 -0000
Mailing-List: contact gdb-patches-help@sourceware.org; run by ezmlm
Precedence: bulk
List-Id: <gdb-patches.sourceware.org>
List-Subscribe: <mailto:gdb-patches-subscribe@sourceware.org>
List-Archive: <http://sourceware.org/ml/gdb-patches/>
List-Post: <mailto:gdb-patches@sourceware.org>
List-Help: <mailto:gdb-patches-help@sourceware.org>, <http://sourceware.org/ml/#faqs>
Sender: gdb-patches-owner@sourceware.org
Received: (qmail 27049 invoked by uid 89); 10 Sep 2015 15:19:32 -0000
Authentication-Results: sourceware.org; auth=none
X-Virus-Found: No
X-Spam-SWARE-Status: No, score=-1.3 required=5.0 tests=AWL,BAYES_00,KAM_LAZY_DOMAIN_SECURITY,RCVD_IN_DNSWL_LOW,T_RP_MATCHES_RCVD,UNPARSEABLE_RELAY autolearn=no version=3.3.2
X-HELO: cvs.linux-mips.org
Received: from eddie.linux-mips.org (HELO cvs.linux-mips.org) (148.251.95.138) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with ESMTP; Thu, 10 Sep 2015 15:19:27 +0000
Received: (from localhost user: 'macro', uid#1010) by eddie.linux-mips.org        with ESMTP id S27007139AbbIJPTZTNTHw (ORCPT        <rfc822;gdb-patches@sourceware.org>);        Thu, 10 Sep 2015 17:19:25 +0200
Date: Thu, 10 Sep 2015 15:19:00 -0000
From:   "Maciej W. Rozycki" <macro@linux-mips.org>
To:     Pedro Alves <palves@redhat.com>
cc:     Paul Pluzhnikov <ppluzhnikov@google.com>,        Mark Kettenis <mark.kettenis@xs4all.nl>,        gdb-patches ml <gdb-patches@sourceware.org>
Subject: Re: [patch] Fix BZ15121 -- x/a broken for addresses in shared libraries
In-Reply-To: <55F19CC3.8080001@redhat.com>
Message-ID: <alpine.LFD.2.20.1509101617580.10647@eddie.linux-mips.org>
References: <CALoOobP+FH-rRO-HYOFgu0QrfHwgteeu_ufawVDL9zeyef7h7g@mail.gmail.com> <55F19100.30600@redhat.com> <201509101433.t8AEX5Cw008716@glazunov.sibelius.xs4all.nl> <CALoOobPcZOgjJ6F2Ufc72y5ZQ+OfiY-xru5B-B4jkAG_qswtow@mail.gmail.com> <55F19CC3.8080001@redhat.com>
User-Agent: Alpine 2.20 (LFD 67 2015-01-07)
MIME-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
X-IsSubscribed: yes
X-SW-Source: 2015-09/txt/msg00175.txt.bz2

On Thu, 10 Sep 2015, Pedro Alves wrote:

> > I can't imagine any reason why (upper levels of) 64-bit GDB would need
> > to be lied to that the 32-bit inferior's 0x80000004 pointer has
> > CORE_ADDR value of 0xFFFFFFFF80000004.
> 
> MIPS has signed addresses, at the hardware level.  Thus a 32-bit ABI on
> a 64-bit machine ends up seeing with sign-extended addresses.

 SH seems to be the same.

  Maciej